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Separation event-constrained optimal power flow to enhance resilience in low-inertia power systems

Püschel-Løvengreen, Sebastián and Ghazavi Dozein, Mehdi and Low, Steven and Mancarella, Pierluigi (2020) Separation event-constrained optimal power flow to enhance resilience in low-inertia power systems. Electric Power Systems Research, 189 . Art. No. 106678. ISSN 0378-7796.

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Weakly interconnected power systems face separation risk during extreme weather events or due to cascading failures. These contingencies may become particularly severe in low-inertia grids, where the sub-regions resulting after system split need to procure enough resources to respond to low (importing areas) and high (exporting areas) frequency conditions. This paper introduces a separation event-constrained optimal power flow (SECOPF) with considerations of inertia and frequency response resources allocation in each balancing area to be capable to withstand, besides the largest generation and load contingencies, also the loss of selected interconnectors. The model, cast as mixed integer linear program, is tested on a reduced version of the Australian power system and validated via dynamic simulation. The results show how the system's frequency resilience to extreme events can be effectively enhanced for both high- and low-frequency conditions that arise in different areas after an interconnector's trip . This is achieved by co-optimising the interconnector flow magnitudes along with the distribution of frequency response resources and inertia levels in each area.

Item Type:Article
Related URLs:
URLURL TypeDescription
Püschel-Løvengreen, Sebastián0000-0002-0248-9618
Ghazavi Dozein, Mehdi0000-0003-2574-7082
Low, Steven0000-0001-6476-3048
Mancarella, Pierluigi0000-0002-9247-1402
Additional Information:© 2020 Elsevier. Received 3 October 2019, Revised 21 April 2020, Accepted 1 August 2020, Available online 13 August 2020. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Subject Keywords:Power system security; Low-inertia power system; Frequency response; Separation events; System split; Resilience
Record Number:CaltechAUTHORS:20210112-144610987
Persistent URL:
Official Citation:Sebastián Püschel-Løvengreen, Mehdi Ghazavi Dozein, Steven Low, Pierluigi Mancarella, Separation event-constrained optimal power flow to enhance resilience in low-inertia power systems, Electric Power Systems Research, Volume 189, 2020, 106678, ISSN 0378-7796,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107443
Deposited By: George Porter
Deposited On:13 Jan 2021 14:55
Last Modified:13 Jan 2021 14:55

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